When chopped, hearts of palm break down into shreds that look like fresh crab meat. Richard Landau seasons the hearts of palm cakes with Old Bay, vegan mayonnaise and Dijon mustard for a sensational main course.

When making an Italian frittata, don't limit yourself to traditional ingredients. The Asian flavors that fill this version offer a real change of pace. Cook the eggs on top of the stove or in the oven—but be sure to use moderate heat so they don't turn rubbery.

Anna Thomas's 1970s book, The Vegetarian Epicure, is iconic; updated in the '90s and rechristened The New Vegetarian Epicure, it focuses on recipes for entertaining. One of her latest dishes is this crusty baked polenta, swirled with mashed butternut squash and smoked Gouda cheese.

"At every gathering these days, there will be a vegetarian," says Renato Poliafito. Stefania Rubicondo, a baker at Baked and its resident non-meat-eater, brought these wonderful individual pies, filled with a mix of sweet celery root, brussels sprouts and parsnips in a sage-infused cream sauce and topped with tender biscuits made with roasted sweet potato.

Heidi Swanson, author of 2007's Supernatural Cooking, has already proven she's a master at creating amazingly healthy and tasty vegetarian recipes with very few ingredients. Here, she toasts kale, coconut and tofu until lightly browned and crisp, then tosses them with brown rice.

In Korea, cooks typically create stir-fries with just one kind of vegetable—lotus root, say, or potatoes. David Chang decided to break with tradition and stir-fry an assortment of vegetables, including Jerusalem artichokes and parsnips. Also unconventional is the maple syrup he adds to the dish; there are maple trees all around South Korea but not much maple syrup.

The South Asian spices in this vegetarian stew reflect the influence of Kenya's generations-old Indian community on the national cuisine. Feel free to substitute other vegetables based on seasonal availability, as Hubert Des Marais does.

For these buttery-soft roasted tomatoes, Alain Coumont boosts the flavor of the creamy goat cheese filling with garlic and basil. The result works both as a side dish or a main course with a salad and crusty bread.

Traditionally made with mashed vegetables left over from a Sunday roast (here shaped into cakes and pan-fried), bubble and squeak allegedly gets its name from the sound the ingredients make in the skillet.

Quinoa is definitely a superfood: A grain-like seed, it's a "complete" protein containing all eight essential amino acids (another plus: it cooks much more quickly than most grains). To create a terrific vegetarian main course, Michael Symon of Cleveland's Lola tosses quinoa with arugula, apple, raisins and fresh herbs, then spoons the salad into a halved baked squash (a great source of iron and vitamins A and C).

Chef way The base for this tofu, eggplant and shiitake katiev ("noodle soup" in Cambodian) is a made-from-scratch vegetable stock with a long ingredient list, including two types of cabbage and dried Chinese mushrooms.

Easy way To simplify the Cambodian noodle soup, we added fewer vegetables to store-bought vegetable broth.

Photographer and Alabamian Robert Rausch grew up eating vegetable casseroles—he and his mother are both vegetarians. The broccoli casserole his family ate is a step up from the standard church cookbook recipe, which calls for using canned mushroom soup: In place of that, he uses wild mushrooms. He still relies on Ritz crackers, though, for the crispy, buttery topping.

Börek is a Middle Eastern pastry filled with anything from vegetables to cheese and ground meat. For this version, Meltem Conant sautés eggplant, peppers and tomatoes and bakes them in layers of phyllo. It's a great option for a vegetarian main course.

"In Marche, we only make lasagna for special occasions like Christmas," Fabio Trabocchi says. For this streamlined version of his luxe lasagna in bianco (white lasagna), he layers flat noodles with a supremely rich sauce, along with a root-vegetable ragù, fresh mozzarella and whole basil leaves.

This eggplant Parmesan is all it should be: delicate slices of fried eggplant nestled in a bright, tangy tomato sauce, layered with gooey fresh mozzarella. The best part is the exceptionally crisp topping, made with dry bread crumbs.